Resonator tuning structure

Abstract

The utility model provides a resonator tuning structure, and relates to the field of wireless communication. The resonator tuning structure comprises a resonator body and a tuning tool. The resonator body comprises a cavity, a resonance rod and a cover plate; the tuning tool comprises a support, a tuning piece and a connecting piece, the support is detachably arranged on the side, away from the cavity, of the cover plate, the tuning piece penetrates through the support in the first direction and is in threaded fit with the support, the connecting piece penetrates through the tuning piece in the first direction and is detachably connected with the center part of the cover plate, and the connecting piece is provided with an abutting part; the abutting part is located on the side, away from the cover plate, of the tuning piece. Wherein the first direction is the connecting line direction of the cover plate and the resonance rod, and the tuning part abuts against the cover plate when rotating forwards around the first direction and abuts against the abutting part when rotating reversely around the first direction. The resonator tuning structure can prevent debugging chippings from entering the resonant cavity to damage the performance of the filter, reduces the height and weight of the resonator body, and facilitates the reduction of the comprehensive cost of the product.

Description

Technical Field

[0001] The utility model relates to the field of wireless communications, in particular to a resonator tuning structure. Background Art

[0002] As an important frequency selection device in the base station RF front end, the coaxial cavity filter usually has a metal screw on its internal resonator, and the resonant frequency is adjusted by controlling the depth of the metal screw in the resonator.

[0003] During the commissioning process, the metal screw is repeatedly screwed in and out of the threaded hole in the metal cover, and the nuts are tightened and loosened. This friction and occlusion creates metal debris that can enter the resonator, compromising the power and intermodulation performance of the entire filter. With the increasing integration of filter modules, the impact of commissioning debris on filter production yields is becoming increasingly prominent, becoming a pressing issue that needs to be addressed. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the purpose of the present utility model is to provide a resonator tuning structure.

[0005] The utility model provides the following technical solutions:

[0006] A resonator tuning structure includes a resonator body and a tuning tool;

[0007] The resonator body includes a cavity, a resonant rod and a cover plate. The cavity is provided with a resonant cavity, the resonant cavity has an opening, the resonant rod is provided in the resonant cavity, the cover plate covers the opening, and the edge of the cover plate is connected to the cavity.

[0008] The tuning tooling includes a bracket, a tuning member, and a connecting member. The bracket is detachably arranged on a side of the cover plate facing away from the cavity. The tuning member is passed through the bracket along a first direction and is threadedly engaged with the bracket. The connecting member is passed through the tuning member along the first direction and is detachably connected to the central portion of the cover plate. The connecting member is provided with a supporting portion, which is located on a side of the tuning member facing away from the cover plate.

[0009] The first direction is the direction of the line connecting the cover plate and the resonance rod, and the tuning component abuts the cover plate when rotating in the forward direction around the first direction, and abuts the abutting portion when rotating in the reverse direction around the first direction.

[0010] As a further optional solution for the resonator tuning structure, a first blind groove is provided on the surface of the cover plate facing away from the cavity, the first blind groove is arranged around the central part and is located between the central part and the edge part, and the tuning member abuts against the bottom of the first blind groove when rotating forward around the first direction.

[0011] As a further optional solution to the resonator tuning structure, the thickness of the central portion and the edge portion are both H1, 2mm≤H1≤3mm;

[0012] The first blind groove is a square groove, and the bottom wall thickness of the first blind groove is H2, 0.3mm≤H2≤0.5mm.

[0013] As a further optional solution for the resonator tuning structure, a second blind groove is provided on the surface of the cover plate facing away from the cavity, and a third blind groove is provided on the surface of the cover plate facing the cavity. The second blind groove and the third blind groove are both arranged around the central part and located between the central part and the edge part. The second blind groove and the third blind groove are offset along the radial direction of the cover plate, and the tuning member abuts against the central part when rotating forward around the first direction.

[0014] As a further optional solution for the resonator tuning structure, the tuning component includes a screwing section, an external thread section and a crimping ring section connected in sequence along the first direction, the external thread section is passed through the bracket and is threadedly engaged with the bracket, and the crimping ring section abuts against the cover plate when the tuning component rotates forward around the first direction.

[0015] As a further optional solution to the resonator tuning structure, the end of the crimping ring segment away from the external thread segment is provided with a convex tooth, and the crimping ring segment abuts against the cover plate through the convex tooth.

[0016] As a further optional solution to the resonator tuning structure, at least two protruding teeth are provided, and the at least two protruding teeth are evenly distributed along the circumference of the crimping ring segment.

[0017] As a further optional solution to the resonator tuning structure, the central portion is provided with a threaded hole, the connecting member is inserted into the threaded hole and threadably engaged with the central portion.

[0018] As a further optional solution to the resonator tuning structure, the resonator body further comprises a shielding sticker, which is attached to a side of the cover plate facing away from the cavity and covers the threaded hole.

[0019] As a further optional solution to the resonator tuning structure, the connecting member is a plastic screw.

[0020] The embodiments of the present utility model have the following beneficial effects:

[0021] When using the tuning fixture to adjust the resonant frequency of the resonator body, the bracket is installed on the side of the cover plate facing away from the cavity, and the connector is connected to the center portion of the cover plate. When the tuning member is rotated in the forward direction about the first direction, the tuning member presses against the cover plate, causing the cover plate to deform, thereby bringing the center portion of the cover plate closer to the resonant rod, reducing the distance between the cover plate and the resonant rod, and thus lowering the resonant frequency of the resonator body. Conversely, when the tuning member is rotated in the reverse direction about the first direction, the tuning member presses against the abutting portion on the connector, and the center portion of the cover plate is pulled by the connector, causing the cover plate to deform, thereby moving the center portion of the cover plate away from the resonant rod, increasing the distance between the cover plate and the resonant rod, and thus raising the resonant frequency of the resonator body. During this process, since the tuning fixture is located outside the resonator body, it can prevent debugging debris from entering the resonant cavity and damaging the filter performance. After tuning is completed, the tuning member is rotated back to its original position, releasing the pressure on the cover plate, and then the bracket and connector are removed.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the internal structure of a resonator tuning structure provided in Example 1 of the present utility model is shown;

[0025] Figure 2 A cross-sectional schematic diagram of a resonator tuning structure provided by Example 1 of the present utility model is shown;

[0026] Figure 3 A schematic diagram showing a state of a resonator tuning structure provided by Example 1 of the present utility model when the resonant frequency is reduced;

[0027] Figure 4 A schematic diagram showing a state of a resonator tuning structure provided by Example 1 of the present utility model when the resonant frequency is increased;

[0028] Figure 5A schematic structural diagram of a resonator body in a resonator tuning structure provided in Example 1 of the present utility model is shown;

[0029] Figure 6 A schematic structural diagram of a tuning element in a resonator tuning structure provided in Example 1 of the present utility model in a specific implementation manner is shown;

[0030] Figure 7 A schematic structural diagram of a tuning element in a resonator tuning structure provided by Example 1 of the present utility model is shown from another perspective;

[0031] Figure 8 A schematic structural diagram of a tuning element in a resonator tuning structure provided in Example 1 of the present utility model in another specific implementation manner is shown;

[0032] Figure 9 A schematic diagram of the internal structure of a resonator tuning structure provided by Example 2 of the present utility model is shown;

[0033] Figure 10 A cross-sectional schematic diagram of a resonator tuning structure provided by Example 2 of the present utility model is shown.

[0034] Description of main component symbols:

[0035] 100-resonator body; 110-cavity; 111-resonant cavity; 112-mounting platform; 120-resonant rod; 130-cover; 131-edge part; 132-center part; 132a-threaded hole; 133-first blind groove; 134-second blind groove; 135-third blind groove; 140-shielding sticker; 200-tuning tooling; 210-bracket; 220-tuning part; 221-screwing section; 222-external thread section; 223-crimping ring section; 223a-convex teeth; 224-center through hole; 230-connecting piece; 231-supporting part. DETAILED DESCRIPTION

[0036] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the template description herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] Example 1

[0042] Please also refer to Figure 1 and Figure 2 This embodiment provides a resonator tuning structure, which consists of a resonator body 100 and a tuning tool 200.

[0043] Specifically, the resonator body 100 includes a cavity 110, a resonant rod 120, and a cover plate 130. A resonant cavity 111 is disposed within the cavity 110. The resonant cavity 111 has an opening, and the resonant rod 120 is disposed within the resonant cavity 111. The cover plate 130 covers the opening, and an edge portion 131 of the cover plate 130 is connected to the cavity 110.

[0044] Tuning fixture 200 includes a bracket 210, a tuning member 220, and a connector 230. Bracket 210 is detachably mounted on the side of cover 130 facing away from cavity 110. Tuning member 220 extends through bracket 210 along a first direction and is threadedly engaged with bracket 210. Connector 230 extends through tuning member 220 along a first direction and is detachably connected to central portion 132 of cover 130. Connector 230 also includes a support portion 231, located on the side of tuning member 220 facing away from cover 130.

[0045] The first direction is the direction of the line connecting the cover plate 130 and the resonant rod 120, which is shown as the Z direction in the figure. The tuning element 220 abuts the cover plate 130 when rotating in the forward direction around the first direction, and abuts the abutting portion 231 when rotating in the reverse direction around the first direction.

[0046] Please combine Figure 3 and Figure 4 When using the tuning tool 200 to adjust the resonant frequency of the resonator body 100, the bracket 210 is installed on the side of the cover plate 130 facing away from the cavity 110, and the connector 230 is connected to the central portion 132 of the cover plate 130. When the tuning member 220 is rotated in the first direction, the tuning member 220 abuts against the cover plate 130, causing the cover plate 130 to deform. This in turn moves the central portion 132 of the cover plate 130 closer to the resonant rod 120, reducing the distance between the cover plate 130 and the resonant rod 120, thereby lowering the resonant frequency of the resonator body 100. Conversely, when the tuning member 220 is rotated in the opposite direction about the first direction, the tuning member 220 abuts against the abutting portion 231 on the connector 230, and the connector 230 pulls the central portion 132 of the cover plate 130, causing the cover plate 130 to deform. This in turn moves the central portion 132 of the cover plate 130 away from the resonant rod 120, increasing the distance between the cover plate 130 and the resonant rod 120, thereby increasing the resonant frequency of the resonator body 100. During this process, since the tuning tool 200 is located outside the resonator body 100, it can prevent debugging debris from entering the resonant cavity 111 and damaging the filter performance. After tuning is completed, the tuning member 220 is rotated back to its original position, releasing the pressure on the cover plate 130, and then the bracket 210 and connector 230 are removed.

[0047] See also Figure 5 In some embodiments, the cavity 110 is cylindrical, the axis of the cavity 110 is vertical, and the opening of the resonant cavity 111 faces upward.

[0048] The cover plate 130 is disposed on the top of the cavity 110, and the central portion 132 of the cover plate 130 is located directly above the resonant rod 120. Accordingly, the Z direction is a vertical direction.

[0049] Furthermore, a mounting platform 112 is provided at the center of the bottom surface of the inner wall of the cavity 110 , and the resonant rod 120 is fixed on the mounting platform 112 by screws or rivets.

[0050] In some embodiments, a first blind groove 133 is provided on a surface of the cover plate 130 facing away from the cavity 110 . The first blind groove 133 is provided around the central portion 132 and is located between the central portion 132 and the edge portion 131 .

[0051] In addition, the tuning member 220 abuts against the bottom of the first blind groove 133 when rotating in the positive direction around the first direction.

[0052] Providing the first blind groove 133 between the central portion 132 and the edge portion 131 reduces the thickness of the cover plate 130 in this area, making it easier to deform. When the tuning member 220 abuts the bottom of the first blind groove 133, the central portion 132 can smoothly approach the resonant rod 120. When the connecting member 230 pulls the central portion 132 upward, the central portion 132 can smoothly move away from the resonant rod 120.

[0053] Furthermore, the thickness of the central portion 132 and the edge portion 131 are both H1, satisfying 2 mm ≤ H1 ≤ 3 mm.

[0054] Meanwhile, the first blind groove 133 is a square groove, and the bottom wall thickness of the first blind groove 133 is H2, which satisfies 0.3 mm ≤ H2 ≤ 0.5 mm.

[0055] On the one hand, there is a certain difference between the thickness of the bottom wall of the first blind groove 133 and the thickness of the central portion 132 and the edge portion 131, so that the ability of the bottom wall of the first blind groove 133 to resist deformation is significantly weaker than that of the central portion 132 and the edge portion 131, which is conducive to concentrating stress on the bottom wall of the first blind groove 133 during the tuning process, causing the bottom wall of the first blind groove 133 to deform, while the shapes of the central portion 132 and the edge portion 131 remain unchanged.

[0056] On the other hand, the thickness of the bottom wall of the first blind groove 133 is not too low, so as to ensure the connection strength between the central portion 132 and the edge portion 131 .

[0057] Optionally, the thickness of the center portion 132 and the edge portion 131 may be 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, 2.5 mm, 2.6 mm, 2.7 mm, 2.8 mm, 2.9 mm, 3 mm, or any value between 2 mm and 3 mm.

[0058] Optionally, the bottom wall thickness of the first blind groove 133 may be 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, or any value between 0.3 mm and 0.5 mm.

[0059] In some embodiments, the central portion 132 is provided with a threaded hole 132 a , and the connecting member 230 is inserted into the threaded hole 132 a and threadedly engaged with the central portion 132 .

[0060] Before tuning, the connecting member 230 is screwed into the threaded hole 132a to connect the connecting member 230 to the central portion 132. After tuning is completed, the connecting member 230 can be removed by screwing the connecting member 230 in the opposite direction, which is convenient and quick.

[0061] Furthermore, the threaded hole 132a is a through hole, and the connecting member 230 is a plastic screw.

[0062] Since the connecting member 230 is made of plastic, no metal debris is generated during the process of screwing the connecting member 230 , thereby preventing the metal debris from entering the interior of the resonator body 100 through the threaded hole 132 a .

[0063] Furthermore, the resonator body 100 further includes a shielding sticker 140. The shielding sticker 140 is attached to a side of the cover plate 130 facing away from the cavity 110 and covers the threaded hole 132a.

[0064] After tuning is completed, the tuning component 220 is rotated to its original position to release the pressure of the cover 130, and then the bracket 210 and the connector 230 are removed to separate the tuning tool 200 from the resonator body 100. Finally, the shielding sticker 140 is affixed to the threaded hole 132a to seal the threaded hole 132a to ensure the sealing of the resonant cavity 111.

[0065] Optionally, the shielding sticker 140 may be aluminum foil or conductive adhesive.

[0066] In some embodiments, a nut is sleeved on one end of the connector 230 away from the cover plate 130 . The nut is threadedly engaged with the connector 230 and serves as the abutting portion 231 .

[0067] Please also refer to Figure 6 and Figure 7 In some embodiments, the tuning member 220 is composed of a screwing section 221 , an external thread section 222 and a crimping ring section 223 , and the screwing section 221 , the external thread section 222 and the crimping ring section 223 are sequentially connected along the first direction.

[0068] The external thread section 222 is disposed through the bracket 210 and is threadedly engaged with the bracket 210. The crimping ring section 223 abuts against the cover plate 130 when the tuning component 220 rotates in the first direction.

[0069] During tuning, the operator rotates the screwing section 221 in a forward direction around the first direction, causing the entire tuning component 220 to rotate. The externally threaded section 222 and the bracket 210 engage with each other, causing the entire tuning component 220 to move along the first direction toward the resonant rod 120. The crimping ring section 223 moves accordingly, pressing against the cover plate 130.

[0070] Conversely, by rotating the screwing section 221 in the opposite direction around the first direction, the entire tuning member 220 can be moved along the first direction away from the resonance rod 120. The screwing section 221 moves accordingly and abuts against the abutting portion 231 on the connecting member 230, thereby pulling the central portion 132 of the cover plate 130 upward through the connecting member 230.

[0071] Furthermore, the tuning member 220 is provided with a central through hole 224 that sequentially passes through the screwing section 221, the external thread section 222, and the crimping ring section 223. The connecting member 230 is disposed in the central through hole 224 and slides and rotates relative to the tuning member 220 during the rotation of the tuning member 220.

[0072] Optionally, the screwing section 221 adopts an integrated nut design to facilitate clamping and force bearing.

[0073] Furthermore, a protruding tooth 223 a is provided at one end of the crimping ring section 223 away from the external thread section 222 , and the crimping ring section 223 abuts against the cover plate 130 via the protruding tooth 223 a .

[0074] During use, the pressing force applied by the crimping ring segment 223 to the cover plate 130 is concentrated on the protruding teeth 223a, which helps to deform the cover plate 130. As the tuning member 220 abuts the bottom of the first blind slot 133 via the protruding teeth 223a and continues to rotate, the protruding teeth 223a gradually squeeze various areas of the bottom of the first blind slot 133, causing the entire bottom of the first blind slot 133 to deform downward.

[0075] Furthermore, at least two protruding teeth 223 a are provided, and the at least two protruding teeth 223 a are evenly distributed along the circumference of the crimping ring segment 223 .

[0076] In some embodiments, the number of the protruding teeth 223a may be two.

[0077] See also Figure 8 In other embodiments, the number of the protruding teeth 223a may also be three.

[0078] This embodiment does not limit this.

[0079] In summary, when using the tuning fixture 200 to adjust the resonant frequency of the resonator body 100, the bracket 210 is installed on the side of the cover 130 facing away from the cavity 110, and the connector 230 is connected to the central portion 132 of the cover 130. By rotating the screwing section 221 of the tuning member 220 forward or reverse, the central portion 132 of the cover 130 can be moved closer to or away from the resonant rod 120, thereby correspondingly reducing or increasing the distance between the cover 130 and the resonant rod 120, thereby adjusting the resonant frequency of the resonator body 100. After tuning is completed, the tuning member 220 is rotated back to its original position, releasing the pressure on the cover 130, and then the bracket 210 and connector 230 are removed to separate the tuning fixture 200 from the resonator body 100. Finally, a shielding sticker 140 is affixed to the threaded hole 132a to seal the threaded hole 132a and ensure the sealing of the resonant cavity 111.

[0080] During the tuning process, since tuning fixture 200 is located outside of resonator body 100, friction between the conventional metal screw and cover plate 130 is avoided, thereby preventing debugging debris from entering resonant cavity 111 and damaging filter performance. Furthermore, compared to traditional screw tuning solutions, this resonator body 100 eliminates parts such as metal screws and nuts, reducing the height and weight of resonator body 100 while also lowering the overall cost of the product.

[0081] Example 2

[0082] Please also refer to Figure 9 and Figure 10 This embodiment provides a resonator tuning structure, which is different from Example 1 in that, in this embodiment, a second blind groove 134 is provided on the surface of the cover plate 130 facing away from the cavity 110, and a third blind groove 135 is provided on the surface of the cover plate 130 facing the cavity 110.

[0083] The second blind groove 134 and the third blind groove 135 are both arranged around the central portion 132 and located between the central portion 132 and the edge portion 131 . The second blind groove 134 and the third blind groove 135 are staggered along the radial direction of the cover plate 130 .

[0084] Furthermore, the tuning member 220 abuts the central portion 132 when positively rotated about the first direction.

[0085] It can be understood that the staggered arrangement of the second and third blind grooves 134, 135 also reduces the wall thickness of the cover plate 130 between the central portion 132 and the edge portion 131, making it easier to deform. When the tuning member 220 presses downward against the central portion 132, the central portion 132 can smoothly approach the resonant rod 120. When the connecting member 230 pulls the central portion 132 upward, the central portion 132 can smoothly move away from the resonant rod 120.

[0086] Optionally, the second blind groove 134 and the third blind groove 135 are both configured as triangular grooves, which are convenient for machining or forming by stamping or the like.

[0087] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0088] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0089] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A resonator tuning structure, characterized in that: Including resonator body and tuning tooling; The resonator body includes a cavity, a resonant rod and a cover plate. The cavity is provided with a resonant cavity, the resonant cavity has an opening, the resonant rod is provided in the resonant cavity, the cover plate covers the opening, and the edge of the cover plate is connected to the cavity. The tuning tooling includes a bracket, a tuning member, and a connecting member. The bracket is detachably arranged on a side of the cover plate facing away from the cavity. The tuning member is passed through the bracket along a first direction and is threadedly engaged with the bracket. The connecting member is passed through the tuning member along the first direction and is detachably connected to the central portion of the cover plate. The connecting member is provided with a supporting portion, which is located on a side of the tuning member facing away from the cover plate. The first direction is the direction of the line connecting the cover plate and the resonance rod, and the tuning component abuts the cover plate when rotating in the forward direction around the first direction, and abuts the abutting portion when rotating in the reverse direction around the first direction.

2. The resonator tuning structure according to claim 1, wherein: A first blind groove is provided on the surface of the cover plate facing away from the cavity. The first blind groove is provided around the central portion and is located between the central portion and the edge portion. The tuning member abuts against the bottom of the first blind groove when rotating forwardly around the first direction.

3. The resonator tuning structure according to claim 2, wherein: The thickness of the central portion and the edge portion is H1, 2mm≤H1≤3mm; The first blind groove is a square groove, and the bottom wall thickness of the first blind groove is H2, 0.3mm≤H2≤0.5mm.

4. The resonator tuning structure according to claim 1, wherein: A second blind groove is provided on the surface of the cover plate facing away from the cavity, and a third blind groove is provided on the surface of the cover plate facing the cavity. The second blind groove and the third blind groove are both provided around the central portion and located between the central portion and the edge portion. The second blind groove and the third blind groove are staggered along the radial direction of the cover plate, and the tuning member abuts against the central portion when rotating forwardly about the first direction.

5. The resonator tuning structure according to any one of claims 1 to 4, characterized in that: The tuning component includes a screwing section, an external thread section and a crimping ring section connected in sequence along the first direction. The external thread section is passed through the bracket and is threadedly engaged with the bracket. The crimping ring section abuts against the cover plate when the tuning component rotates forward around the first direction.

6. The resonator tuning structure according to claim 5, wherein: A convex tooth is provided on one end of the crimping ring section away from the external thread section, and the crimping ring section abuts against the cover plate via the convex tooth.

7. The resonator tuning structure according to claim 6, wherein: At least two protruding teeth are provided, and the at least two protruding teeth are evenly distributed along the circumference of the crimping ring segment.

8. The resonator tuning structure according to any one of claims 1 to 4, characterized in that: The central portion is provided with a threaded hole, the connecting piece is inserted into the threaded hole and is threadably matched with the central portion.

9. The resonator tuning structure according to claim 8, wherein: The resonator body further includes a shielding sticker, which is attached to a side of the cover plate facing away from the cavity and covers the threaded hole.

10. The resonator tuning structure according to claim 8, wherein: The connecting piece is a plastic screw.

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